In a customer table,a(n)________ field would serve as a good primary key.
A) phone number
B) customer ID
C) address
D) date of birth

Question

Quizplus · Accepted Answer

A good primary key should be unique and never change. Both phone numbers and addresses can change for a customer, and date of birth might not be unique. Customer ID is a unique identifier assigned to each customer and is ideal as a primary key.

In a Customer Table,a(n)________ Field Would Serve as a Good